<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<!-- 引入样式 -->
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
<!-- 引入组件库 -->
<script src="https://unpkg.com/element-ui/lib/index.js"></script>

<body>
<el-input v-model="input" placeholder="请输入内容"></el-input>

<script>

    new Vue({
                el: '#app',
                data: {
                    message: 'Hello Vue.js!',
                    input: ''
                }
            })

</script>
</body>
</html>